/**
 *
 *  Copyright (c) 2011, AstroDAbis
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without modification,
 *  are permitted provided that the following conditions are met:
 *
 *      * Redistributions of source code must retain the above copyright notice,
 *        this list of conditions and the following disclaimer.
 *      * Redistributions in binary form must reproduce the above copyright notice,
 *        this list of conditions and the following disclaimer in the documentation
 *        and/or other materials provided with the distribution.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 *  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 *  OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 *  OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
package org.jiscinvolve.astrodabis.barberry.control.jobs;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.validation.Valid;

import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;
import org.springframework.validation.BindingResult;

import org.springframework.stereotype.Controller;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.context.request.WebRequest;

import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ModelAttribute;

import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional; 

import org.jiscinvolve.astrodabis.barberry.control.Paths;
import org.jiscinvolve.astrodabis.barberry.control.ObjectData;
import org.jiscinvolve.astrodabis.barberry.control.RequestData;
import org.jiscinvolve.astrodabis.barberry.control.BaseController;

import org.jiscinvolve.astrodabis.barberry.common.core.Job;
import org.jiscinvolve.astrodabis.barberry.common.core.Account;

import org.jiscinvolve.astrodabis.barberry.common.core.Identifier;
import org.jiscinvolve.astrodabis.barberry.common.core.Identified;
import org.jiscinvolve.astrodabis.barberry.common.core.SimpleIdent;

import org.jiscinvolve.astrodabis.barberry.common.core.exception.*;

/**
 *
 */
@Controller
@RequestMapping(Paths.JOB_EDIT)
public class EditJobController
extends BaseController
    {

    /**
     * Our debug logger.
     * 
     */
    private static Log log = LogFactory.getLog(EditJobController.class);

    /**
     * Job edit form.
     * 
     */
    public static final String FORM_PAGE = "jobs/job-edit" ;

    /**
     * Form attribute name.
     * 
     */
    public static final String FORM_DATA = "bean" ;

    /**
     * Create our RequestData for this request.
     *
     */
    @ModelAttribute(RequestData.MODEL_ATTRIB)
    public ObjectData<Job> data(
        WebRequest request,
        @PathVariable(Paths.IDENT) String ident
        ){
        return new ObjectData<Job>(
            request,
            womble,
            actor(
                request
                ),
            womble.jobs().select(
                womble.jobs().ident(
                    ident
                    )
                )
            );
        }

    /**
     * Get the form page.
     * 
     */
	@RequestMapping(method=RequestMethod.GET)
	public ModelAndView page(
	    @ModelAttribute(RequestData.MODEL_ATTRIB) ObjectData<Job> data,
	    ModelAndView model
	    ){
        //
        // If we found the Job.
        if (data.object() != null)
            {
            //
            // If we are logged in as the Job owner.
            if ((data.actor() != null) && (data.actor().equals(data.object().owner())))
                {
                model.addObject(
                    FORM_DATA,
                    new EditJobBean(
                        data.object()
                        )
                    );
                model.setViewName(
        		    FORM_PAGE
                    );
                return model ;
                }
            //
            // If we are not logged in as the Job owner.
            else {
                throw new PermissionException();
                }
            }
        //
        // If we couldn't find the Job.
        else {
            throw new NotFoundException();
            }
        }

    /**
     * Post the form.
     * 
     */
	@RequestMapping(method=RequestMethod.POST)
	public ModelAndView post(
	    @ModelAttribute(FORM_DATA) @Valid EditJobBean bean, BindingResult result,
	    @ModelAttribute(RequestData.MODEL_ATTRIB) ObjectData<Job> data,
	    ModelAndView model
	    ){
        //
        // If we found the Job.
        if (data.object() != null)
            {
            //
            // If we are logged in as the Job owner.
            if ((data.actor() != null) && (data.actor().equals(data.object().owner())))
                {
                //
                // If the input is not valid, re-display the form page.
		        if (result.hasErrors())
		            {
                    log.debug("Input has errors");
                    for(FieldError error : result.getFieldErrors())
                        {
                        log.debug("  Error [" + error.getObjectName() + "][" + error.getField() + "][" + error.getDefaultMessage() + "]");
                        }
            		model.setViewName(
                        FORM_PAGE
                        );
		            }
                //
                // If the input is valid.
                else {
                    try {
                        //
                        // Update the job.
                        data.object().update(
                            bean
                            );
                        //
                        // Re-direct to the tag details page.
                		model.setViewName(
                            data.redirect(
                                data.object()
                                )
                            );
                        }
                    //
                    // Anything goes wrong, add an error and re-display the form page.
                    catch (Throwable ouch)
                        {
                        log.error("Exception while updating Job [" + data.object().ident() + "][" + ouch.getClass().getName() + "][" + ouch.getMessage() + "]");
                        result.addError(
                            new ObjectError(
                                FORM_DATA,
                                "Oops, something went wrong. Please try again later"
                                )
                            );
                		model.setViewName(
                            FORM_PAGE
                            );
                        }
                    }
                return model ;
                }
            //
            // If we are not logged in as the Job owner.
            else {
                throw new PermissionException();
                }
            }
        //
        // If we couldn't find the Job.
        else {
            throw new NotFoundException();
            }
        }
    }

